<!DOCTYPE html>
<html>
<head>
	<title>loading-demo</title>
<style>
:root {
  --s-loader-wrapper-bg-color: rgb(21, 22, 43);
  --s-loader-width: 20px;
  --s-loader-height: var(--s-loader-width);
  --s-loader-border-color-trans: rgba(29, 161, 242, 0.2);
  --s-loader-border-color-full: rgb(29, 161, 242);
}

body {
  margin: 0;
  background: var(--s-loader-wrapper-bg-color, rgb(21, 22, 43));
  height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.spinning-loader {
  width: var(--s-loader-width);
  height: var(--s-loader-height);
  border: 5px solid var(--s-loader-border-color-trans);
  border-left-color: var(--s-loader-border-color-full);
  border-radius: 50%;
  background: transparent;
  animation-name: rotate-s-loader;
  animation-iteration-count: infinite;
  animation-duration: 1s;
  animation-timing-function: linear;
  position: relative;
}

@keyframes rotate-s-loader {
  from {
    transform: rotate(0);
  }
  to {
    transform: rotate(360deg);
  }
}
</style>
</head>
<body>
<div class="spinning-loader"></div>

</body>
</html>